Water-circulating pump for motors



Nov. 6, 1928. 1,690,911

C. H- SHIRK WATER CIRCULATING PU'HP FOR IOTORS Filed May 18, 1923gwuenfoz I 25 20 i I flttotmzq Patented Nov. 6, 1928.

CHARLES H. SHIRE, OF ST. PAUL, MINNESOTA. I

WATEB-CIRCULATING PUMP FOR MOTORS.

Application filed Kay 18,

L My invention relates to water circulating pumps for motors and has forits object to provlde a ump which may be substltuted 1n lace of t e fanpulley .and support there- 6 or and operated by the fan belt tocirculate water throu h the cooling system of a motor.

Another ject of the invention resides in providing bearings within thefan pulley proper by means of which the amount of wear on. the bearingsfor supporting the pump is greatly reduced.

A still further objectis to provide a centrifu al pump having a stuflingbox through which the driving shaft extends, which pump has attached toit asupport extending into, the fan pulley of the device, said sup ortand shaft being provided withball bearmgs within the interior of thesaid pulley by means of which the pulley and rotatable member of thewater circulating pump is journaled without causing the strain imparted.to the said pulley by the fan belt to be transmitted to the stuifingbox thereby increasin the life of the circulating pump.

A sti 1 further object is to form the pump casing with a cover platehaving attached to it a stufling box through which the shaft operatingthe rotatable member of the ump extends and to further provide a tu ularbracket which is secured to said cover plate and extends inwardly withinthe interior of the fan pulley whichis attached to the ex treme end ofsaid shaft, which support has positioned within it ball bearings mountedupon said shaft whereby the said shaft, pulley and ump member arerotatably su ported in ependent of the stufiing box of the said ump. 7

0t er objects of the invention reside in the detailed construction ofthe same, as clear- 1y brought out in the specification and disc osed inthe drawings relating to my inven tion.

In the drawings illustrating my invention in one form;

Figure 1 is a side elevational view of a portion .of a motor, and thecooling system therefor showing my invention applied thereto.

Figure 2 is a sectional view taken on line 22 of Figure 1.

Figure 3 is an enlarged sectional view taken through the pump anddriving pulley therefor.

My invention is particularl adaptedto be used in conjunction with thewater cir- 1923. Serial No 639,879.

culating systems of motors,-such as are now quickly due to the strainapplied to the fan pulley when the said belt has been unnecessarily.tightened thereby causing the said pumps to wear out and leak in a veryshort time. My invention overcomes these difii- 'culties by arrangingthe bearings within a detachable support secured to the pump casing,which support extends within the interior'of the fan pulley.

In Figure 1, I have shown aportion of a motor and cooling systemconsisting of a motor 10 having a water outlet 11 connected with thewater jacket of the same and a radiator .12 and water tank 13 associatedtherewith which is formed with a water inlet 14 adapted to communicatewith the water outlet 11 of the motor 10. A fan 15, which is attached toafan ulley 16, is adapted to be driven by a fan lielt 17 from the crankshaft of motor 10,- which, being of ordinary construction, has not beenshown in detail in this application.

My invention consists principally of a casting A having a pum chamber 47to which is directly connecte near the center of the same a waterpassageway 18. The passageway 18 is formed with a flan e 19 by means ofwhich the same may o directly bolted to the water outlet 11 of motor 10so as to bring the interior of the water jacket of the said motor intocommunication with the interior of the pump casing 47. The one side ofthe ump chamber 47 is formed 0 en and is a apted to be closed by means 0a cover 20 which is rigidly bolted to the casing 47 by means of bolts22, 23 and 24. From the upper portion of the pump casing 47 issues aneck 25 which communicates with the interior of the said pum casing andis connected with a casting 26 ormed with a depending neck 27 by meansof a hose connection 28. The casting 26 is formed with a flange bymeansof which said casting may be bolted with cap screws 30 to the undersideof the water tank 13 of the water inlet 1401 the said tank. In thismanner, water may be drawn, as will be boss 31 through which a shaft 32passes. A

stufing box 33 is screwed uponthe end of the boss 31 and serves to makea water tight connection between the said shaft and the pump casing.Shaft 32 terminates within the interior of the casing 47 and has securedto it by means of a pin 34 a propeller 35 which may be of an ordinarydesign, which is adapted to circu ate the water from the engine and intothe radiator of the motor as the said'shaft 32 is rotated.

For supporting and journalling the shaft 32, I provide bearings separatefrom the boss 31 so that the thrust or pull of the belt does not causewear within the said boss. This structure comprises primarily a tubularsupporting member 36 cut away on one side and formed with a flange 37 onits other side extending outwardly toward the edge of the cover 20 ofthe pump, which tubular support is concentrically arranged relative tothe shaft 32. On the extreme end of the shaft 32 is attached the pulley16 previously referred to, which may beheld in place by means of a taperpin-38 or any other suitable device. Within the pulley 16, the same isformed with an internal bore 39 into which the tubular support 36extends. Su port 36 is formed as a continuous ring at its extreme end,as indicated at 40, which is provided with a closure 41 fitting over theend of the shaft 32 adjacent the interior of the pulley 16. The interiorof the portion of support 36 is bored concentrically relative to theshaft 32 and has positioned within .it two ball bearmgs 42 and 43 whichsnugly fit within the interior of the same. These ball bearings are heldupon the shaft 32 upon enlarged portions 44 and 45 thereof and'aresecured thereto by means of a drive-fit. These bearings rest a ainst anannular shoulder 46 formed on said shaft so that the sa d bearings areproperly positioned. A cover plate 47 is secured to the support 36 toenclose the ball bearings 42 and 43 and to prevent the dirt and dustfrom entering the same. With this construction, it can readily be seenthat the shaft 32 and propeller 35 mounted thereon are journalled on'the ball bearin s 42 and.43 which are supported on the tu ular member36. In this manner, all of the stress imparted to the pulley 16 istransmitted through these bearin and to the said support instead ofthroug the boss 31 to whic the stuifin box 33 is attached. Aconstruction is therefiy provided in'which is constructed detachable sothat the boss 31 may be readily threaded to receive the stuifing box 33so that the said bearings 42 and 43 may be properly aligned,relative tothe shaft 32. v

For providing tension to the belt 17, I provide an idler pulley 48 whichis rotatably mounted upon a bracket 49 pivoted on a stud shaft 50 whichis secured to the pump casing 47 by means of a bolt 51. A coil spring 52surrounding the shaft 50 operates to hold the pulley 48 in contact withthe belt 17 to provide a uniform. pressure against the same so that theproper belt tension is at all times attained.

My invention is exceedingly simple in construction and utilizes theexisting portions of the motor for securing the drive therefor. Thebearings used in Lournalling the pump shaft are entirel wit out the umpso that the same may e readily lubricated so that the lubricant used inconnection with the same is not discharged into the pump chamber'andcirculated about in the cooling system of the motor. The bearings are soarranged that the same are in direct alignment with the drive beltthereby reducing the bendin of the shaft an the binding in the stung boxso that wear of the stufiing box and leakage of the pump is minimized.

In accordance with the patent statutes, I have described the principlesof operation of my invention, together with the apparatus which I nowconsider to represent the best embodiment thereof, but I desire to haveit understood that the construction shown is only illustrative and thatthe invention can be carried out by other means and ap lied to usesother than those above set orth within the scope of the followingclaims.

I claim:

1. In a water circulating pum ada ted to be connected to the engine bock 0 an automobile, a pump casing, inlet and outlet pump connectionsfor said pum casin a cover for said ump casing,'a sha exten ing throughsaid cover and intosaid casing, a stufling box mounted on an integralprojection on said cover, a tubular supportin member removably securedto said cover an extendin along and surrounding said shaft and having anopening allowing access to said stufling box, a pulley secured to theextreme end of said shaft, said pulley having a portion projecting oversaid tubular supporting member, an bearings formin the sole support. forsaid shaft position within said tubular supporting member whereby stressimparted to. said pulley is transmitted through said bearings to saidsupporting member.

2. A water circulating pump including, a casing, a detachable cover forsaid pump, a shaft extending through said cover, a pump member securedto one end of said shaft, a pulley member secured to the other end ofsaid shaft, a stufiing box mounted upon said cover, a bracket secured tosaid cover interposed between said pulley and said cover, and a longbearingsupgorted solely by said bracket to support sai shaft virtuallyentirely separate from said casing.

3. A water circulating pump including, a casing, a pump member Withinsaid casing, a shaft for operating said pum member, a de tachable coverhavin a stuflmg box formed therein for said sha t, a bracket supportedby said casing, a long bearing supported solely by said bracket, adriving element secured to said shaft adjacent said bearing, saidbearing providing a support for said ihaft independent of said casingand stufling CHARLES H. SHIRK.

